Toro Groundsmaster 360 Service Manual page 324

The Groundsmaster 360 machine uses 4 electrical relays that have 5 terminals.
A tag near the wire harness relay connector can be used to identify each relay.
The start relay is used in the engine starting circuit. When energized by the
engine ECU, the start relay provides a current path to energize the engine
starter solenoid.
The EGR relay is used to provide current to the engine EGR valve when
energized by the engine ECU.
The air conditioning relay (on the machines with operator cab) is used to control
the air conditioning electrical power circuit on the machine. When energized by
the air conditioning switch, the relay provides current for the air conditioning
components.
The air conditioning clutch relay (on the machines with operator cab) is used
to monitor the air conditioning clutch.
The start and EGR relays are located inside the power center assembly behind
the operator seat (Figure 228).
The air conditioning relay is located in the cab headliner (Figure 229). The air
conditioning clutch relay is attached near the washer fluid tank (Figure 230).
Electrical System: Testing the Electrical Components Page 5–88 Groundsmaster 360
16225SL Rev C